Road-building machine.



H. N. HALL.

ROAD BUILDING MACHINE.

APPLlCATlON FILED DEC. 3, I915.

Patented May 30, 1916.

3 SHEETS-SHEET1- H. N. HALL.

ROAD BUILDING MACHINE.

APPLICATION FILED DEC. 3. 1915.

Emma May 30, 1916.

3 SHEETS-SHEET 2.

H. N. HALL.

ROAD BUILDING MACHINE. APPLICATION FILED DEC. 3, 1915.

' I Patented May 30,1916.

M X F mww ROAD-BUILDING MACHINE.

Specification of Letters Patent.

Patented May 3U, ftl fifi Application filed December 3, 1915. Serial No. 64,889.

To all whom 2'25 may concern:

Be it known that l, HARRY N. HALL, a citizen of thellnited States, residing at Albany, Dougherty county, State of Georgia, have invented certain new and useful Improvements in Road-Building Machines, of which the following is a specification.

This invention relates to road building machines and more particularly to road drags and similar machines which may be used for the purpose of scraping or grading roads.

The principal object of the invention is to improve machines of the, above character and provide a machine thoroughly adapted to its work and one which is flexible and easy of control.

Another object of the invention is to provide a machine of this cha meter in which the blades rigidly mounted and ar ranged so as to be given a substantially straight motion under practically all con ditions so as to keep them from scooping or other ise doing imperfect work on very wet or on hard and rocky roadways.

Another feature of improvementin this marl no is that it can be used to advantage for incline work, grading or crowning a roadway when necessary. The construction of the machine, embodying as it does simple mechanical movements, allowsof a complete and quick adjustment of all parts and ease of accessibility to all parts thereof.

The above and other objects and the novel features ofthe machine will be apparent from the following description, taken in connection with the drawings, in which Figure 1 is a plan view of a machine embodying the invention; Fig. 2 is a side elevation of the same; Fig. 3 is a view in outline showing two machines embodying my invention connected to a single leading device; l 4 is an enlarged detail sectional view of one of the wheels of the machine, showing the manner of mounting it; Figs. 5, 6 and 6 are views of details; and Figs. 7 and 8 are, respect tively, plan and cross sectional views of the manner of mounting caster wheels on the frame of the machine.

Referring to the drawings and Figs. 1 and 2 in particular, the frame A of the machine is built up of angle'irons of suitable size, the side members of the frame consisting two angle irons 10 and ll spacedt slight distance thereof facing *"n and having the open inwardly and outaxle.

chine, are located in spaced relation at 14 and 15 near the rear end of the machine and are connected together intermediate their ends by a transversely extending pair of spaced bars 16.

The frame A is carried by running gear which consists of two pairs of wheels 1? built up of three thicknesses 18 of board or other suitable material, as shown in i. The boards 18 of proper thickness are crosslapped and nailed or bolted together then turned to a suitable diameter. Upon the rim of this wooden structure placed an iron or steel the 19 which is fastened. in any preferred manner. A hole 20 is bored through the center of the wooden structure large enough to receive a standard pipe nipple 21 projecting from the opposite sides of .the wheel and threaded at its outer ends.

lhe pipe nipple 21 is of prop-er size to slip over the axle 22, allowinga close fit and the outer threaded ends thereof have pipe flanges 23 threaded thereon. Bolts pass 5 through the clamps 23 and into the wooden wheel to clamp said flanges against the opposite sides thereof. i'l. dowel pin 25 passes through an opening in the axle 22 and fits in recesses in one side of the wheel to key the wheel on the shaft, the flange on that side of the Wheel coveringthe recesses in which the pin 25 is located.

The axles 22 are divided at the center as indicated by the dotted line 221 and are adapted to run in a sllding tube or sleeve 26 which extends between the inner hubs of the wheels on opposite sides of the frame. This arrangement permits each wheel to rotate independently of the other and on its own This feature permits the turning of the machine in a short space without undue friction or strain on the various parts.

In Figs. 7 and 8 l have illustrated another mannerof permitting short turns in wort; ing over iort section of roadway and in n ti; rent a caster yaxle 22 carries a wheel 27 is mounted at each corner of the frame, supporting the latter by means of a bracket 28, the wheel being rotatably mounted in the lower end of said bracket. A pin 29 is fastened at the upper end of the bracket and extends into a socket in the block 30, the outer end of the pin 29 projecting upwardly into the socket and having a cap 31 fitting thereon to retain the pin and bracket in place.

Referring to Fig. 4, the outer end of each standard pipe nipple 32 having on its inner surface a suitable Bab- Lbitt bearing or bushing 33. The nipple 32 constitutes the bearing for the axle and the opposite ends thereof are threaded to receive threaded standard pipe caps 34 and 35, respectively. The cap 34 closes the outer end of the bearing sleeve 32 and-the cap 35 compression grease cup and together the caps will completely exclude dust from the bearing surfaces.

The axles are connected to the frame by means of U-bolts or clamps 38 which pass around the sleeves 32 and have the ends machine the frame of which it may is provided with a square hanger thereof projecting upwardly through the spape between-the side-angle irons 10 and 11, the'nuts 39 fitting theends of the clamps 38 and holding them in position on the frame. By. the construction of the wheels, their axles, and the manner of mounting them on the frame, these parts are readily accessible 0r inspection and repair.

Between the front and rear walls of the carries a plurality of re versible steel scraper blades 40. These blades are similarly constructed and'mounted and therefore only one of them will be described. The blade 40 is curved transversely and has a central longitudinal row of bolt holes 41 to receive bolts 42 by means hangers 43. One of these hangers is shown in Fig. 6 of the drawing and consists of a single casting provided with a part 44 curved to fit the rear side of the plate 40 and also having an elongated hole 45 to register Withone of the holes 41 to receive the bolt 42, whereby the blade 40 may be adjusted with reference to the hanger to take up the wear. The upper end of the hanger opening 46 adapted to fit the transversely extending bar 47 which supports all of the hangers. One side of the opening 46 in the upper end of the is split as at 48 so that it slightly to tightly clamp it to the The bar 47 has two collars 50 and sprung bar 47.

of the crank members part of a ball be fastened to the spaced may be and carry the horizontal parts of the crank arms 53 and 54. The bearing member 56 is located in advance of the bearing member whereby the blade 40 is hung so that it extends diagonally across the frame A.

' The cranks 53 and 54 on opposite sides of the frame have knuckle or ball and socket joints at the upper ends thereof. As illustrated in Fig. 5, the upper end of the crank is curved so as to provide a ball 57 which will fit in a socket 58 formed by two complementary socket members 59 and 60 secured to the outer end of each of the links 61 and 62. The links 61 and 62 extend rearwardly and are connected to socket members 63 and 64, respectively, at the upper ends of the next scraping blade. The socket members 63 and 64 are double-ended and the other ends thereof are connected by reach rods 65 and 6 to suitable levers 67 and 68 which move over toothed segments 69 and 70 at the rear of the frame. By operating either the lever 67 or 68 the scraper blades may beraised or lowered on either side of the machine to adjust them to any inclination desired. In order blades off of the ground, at both ends, one of the hangers 43 near the center of each blade is extended upwardly and made in the form shown in 6. The hanger of Fig. 6

to simultaneously raise both of the has an arm 711 which is provided at its up- '1 per end with a ball 712 which constitutes and socket joint 71 similar to the ball and socket joints at the upper ends of the crank arms 53 and 54. The ball and 'socket joints at the upper ends of those hangers are connected together by a link 72 and a rod 73 is connected to the rear hanger. The rear end of the rod 73 is connected to a pivoted lever 74 which has parts adapted to engage the toothed segment 75 mounted on the plates 16.

When it is desired to couple two machines together to operate side by side over a road I use a leading gear L, as shown in Fig. 3 where the frames of the machines only are illustrated. The front cross bar of each frame comprises the lower and upper angle irons 12 and 13 and the vertical sides of these angle irons are located in front. Two angle plates are secured to the vertical sides of the angle irons 12 and 13 at the center of the frame andspaced apart a suflicient distance to provide a jaw 81 and the adjacent 82 located at any suitable point. at the front was,

of the frame. The leading gear L is composed of irons and has two central bars and 8d lying parallel to the frame and arranged with their flanges projecting upwardly and spaced apart to clamp between them the straps of iron andflil. An angle iron 87 extends transversely of the bars 83 and at the rear thereof and the outer ends of the angle iron 87 are connected to the front end of the leading gear by means of the angle braces 88 and 89. The straps 86 may be fastened. between the side angle bars 10 and 11 of the frame and the outer ends of the angle iron 87 have straps 90 and 91 secured thereto and fastened spectively to the jaws 81 and 82. By this arrangement the draft applied to the front end of the leading gear L will be distributed to the two machines at the rear. In order to hold the machines a definite distance apart lugs 92 are bolted to one side of one machine and lugs 93 are bolted to theirm m'ediately adjacent side of the other inachine. Une of the machines is run a little in advance of the other machine and suit able bolts 94 are passed through holes in the ends of the lugs 92 and 93. l

The operation of the machine will be ap parent from the foregoing description, The levers 67 and 68 at the rear of the machine may be operated to simultaneously raise the scraping blades at either side of the n1achine and tne lever'i'd at the center is designed for the purpose f bodily raising the blades at a singlee'peration when the chine is inoperative or in passing over ol structions or for any purpose, When said blades are desired tobe lifted Without having to handle both the adusting levers 6'? and G8. The hangers which are controlled by the le- "ver 7d are also designed to hold the blades at any desired angle While the machine is at- Work. The hangers of the machine are provided with vertical slots to allow for shift 111 the blades to take up Wear or for inakin any desired adjustment.

It will be seen that the Wheels are located entirely Within the margi al outline of: the frame 'l the blades e fiend beyond sides of 'll hile l have shown and described the iii-- rention in detail do not Wish to be limited to the exact construction illustraitcdv Having thus described the invention, "what is claimed and desired to be secured by Let tors is: .f

1. In a road building machine, the. com-- bination ofv a Sl1}')p0l 'n frame, running; gear therefor, a blade ea time . 1 it Owl nil.

ding transversely of th e machine, and nieansfor supporting said blade comprisingcranlrs pivotally carried by said fra'ine,

Gilt

of tlieinachine, means for supporting said i blade comprising cranks pivoted on said, frame, a bar extending longitudinally of the blade and rotatably supported by said cranks and hangers depending from said bar and attached to said blade, and rigidly connecting the bar and blade togetl ier, means whereby either of said cranks may be rocked. to raise or lower either end of said blade, and means between said craulits whereby said blade may be simultaneously It ised or lou ered at both ends l. in a road building machine, the combination of a supporting frame, running gear therefor, blades extending transversely of the machine, and means for supporting said. a

blades comprising pairs of cranks carried by said frame, bar carried by each pair of cranks, bangers carried by each bar and attached to a blade, and means for siinul. neously lilfjllln the cranks on either said frame to raise or lower the ends of the blades at will.

5. In a machine of the class described, the combination of a supporting frame, running gear therefor, a scraper blade extending transversely of the machine, cranks pivotally mounted on said frame, a bar pivotally mounted in said cranks, means whereby the blade is connected to said bar, means for rocking the cranks to raise or lower the bar and blade, and means for rocking the bar in its bearing" in said cranks to raise and blade independent of said cranks.- 'd building machine, the cornbi- T a supporting raise, running gear a blade transversely of .bine, niea for support 11 said s able comprising cranks carried by said frame, a bar pivotally supported at the lower ends of said cranks, and hangers rigidlymounted on said bar and attached to said blade, means fonroclring said cranlrs to raise and lower said blade, said rocking means comprising rods terminating in levers, and lniuclile joints connecting said rods to. said cranks.

7. lln'a road scraping machine, the combinetion of a supporting frame, rui'ining r a scraper blade extending" ot the machine, cranlts pivoted hangers fixed on said bar and rear side of said blade, means for rocking' "said cranks comprising the cranks by knuckle joints, and meansfor on said frame and provided with bearings, a

bar extending transversely of the frame above the blade and mounted in the hearings in said .cranks, hangers rigidly attached to said bar and to said blade for supporting the blade from the bar,means for operating the cranks to raise and lower said bar and the blade attached thereto, an arm rigidly attached to said bar, and an operating rod connected to said arm for rocking the bar in said bearings in the cranks'to change the inclination of the blade to the ground.

8. In a road building machine, the combination of a supporting frame, running gear therefor, an elongated double-edged transversely curved blade extending diagonally beneath the frame, and means for supportlevers connected to turning said bar independently of said cranks to bodily raise and lower said blade.

10. In aroad building machine, the combination of a supporting frame, running gear therefor, a blade extending transversely beneath the frame, means for supporting said blade comprising cranks hung on said frame, a bar pivotally supported by said cranks, and hangers fixed on said bar and attached to the rear side of said blade, means for rocking said cranks comprising levers connected. to the cranks by knuckle joints, oneof said hangers havingan u wardly extending part and a lever connected to said upwardly ex tending part by a knucklejoint and adapted to turn said bar independently of said cranks to bodily raise and lower said blade.

11. In aroad building machine, a frame comprising side members made up of parallel angle irons having their vertical flanges spaced apart, road scraping means mounted on said frame and U-shaped hangers depending from said frame and extending through the space between said flanges, axles mounted on said hangers, and wheels carried by said axles.

12. In a road building machine, the combination of a supporting frame comprising side members built-up of parallel angle irons having their vertical flanges spaced said blade may be adjusted verti- 'with the rearmost .ja'cent sides provided with apart, road scraping members depending from said side members of the frame, hangers extending through the spaces between said flanges and depending from the under side of said frame, divided axles beneath said frame, a wheel on each part of an axle, and bearings at the outer ends of the axles and fitting in the depending parts of the hangers on said frame. I f

13., In a road building machine, the com bination of a supporting frame comprisin sides built up of parallel members space I apart, hangers extending through the spaces between said ing from the under side of the frame, cranks pivoted in said hangers, a scraper blade connected to said cranks and extending across the frame, cranks to raise and lower said scraper blade, said hangers being adjustable longitudinally of the sides of the frame to change the angularity of the scraper blade.

14. In a road building machine, the combination of a supporting frame, running gear therefor, a blade extending trans= versely of the machine, means for supporting said blade comprising cranks plvoted on said frame, a bar extending transversely of the frame and rotatably su ported by hearings in said cranks, means or connecting'said blade to said bar in its hearings in said cranks, and means for turning said bar to simultaneously raise or lower the blade at both ends.

15. In a road building machine, a leading gear comprising a substantially V-sha pe and means for rocking said" parallel members and dependframe having means at opposite sides and the center whereby it may be connected to a plurality of road building machines the connectingmeans at one side of said frame being longer than that at the opposite side whereby one of the machines drawn thereby will be disposed in advance of the other ma ch-ine 16. In a machine of the class described,

the combination of a supporting frame, running gear therefor taching means rigidly mounted on 'said blade and movable bodily therewith, cranks carried by said frame, each crank having a rigid arm, said crank attaching means on the blade being pivotally mounted in the ends of the rigid arms of said cranks, and means whereby said cranks may be operated a scraper blade extending transversely o the frame,crank'atindependently'of one another to raise or H lower the ends of'the scraper blade.

. 17. The combination of two road building machines, each machine comprising a blade extending diagonally across the machine, the machines being arranged side by side part of the blade on one machine'in advance of the bladepn the other machine, and having their immediately adlugs, pins ex tending through the lugs iiO'IllZliIltLill {she nmchines a. fixed distance apart, means at the iOi'\V2K1(ifl1l(iS of the machines whereby :1 lezuiing gear may be attached thereto, and

:1 leading gear having means at the rear end Hwreci attachable to said. machines whereby both machines may be drawn by a single dra'fs device.

18. In a road building machine, the combination 0]? 2L supporting frame, running gear therefor 2L double-edged biade extending transversely of the machine beneath the frame, means for supporting said bier comprising :i bev pivotaily supported he said frame rigid hanger arms carrie-C b said bar means for adjusmbly securing said blade to said hanger arms whereby'the blade may be reversed to use either icngituciinai edge thereof as a Working edge, and means for turnin said bar on its Jivotai su' wort to raise and lcwer'the blade.

in 'EBS'iJIHlOHY 'whereoi I afiix my signa ture,

HARRY N. HALL. 

